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Pink

Acryla Designer Gouache is a fast-drying, opaque acrylic based watercolor paint. It's water soluble while wet, and water-resistant, matte and opaque, even over dark surfaces. Great for grounds and layering.

Pink

Color Swatches created using full strength/50/50 and were applied on cold press Bristol board (2 ply) material.

Permanence

Toxicity

History

Alternate Names

BR1:1—Rhodamine 6G

Pigment Type

organic, fluorone dye

Chemical Name

n/a

Chemical Formula

C28H31N2O3Cl

Properties

Rhodamine 6G is a staining reddish-yellow pigment that has fluorescent properties. It is extremely soluble in both water and alcohol. Fluorescent molecules absorb light at one wavelength and emit light at a longer wavelength.

Permanence

Rhodamine 6G, like all fluorescent dyes, is not considered permanent, however it is reported to have high stability for a fluorone dye.

Toxicity

Rhodamine 6G is toxic, however it can be biologically inactive and hence non-toxic in a lake pigment form.

History

Rhodamine dyes are often used for microscopy in the biological sciences.

Alternate Names

PW6—Titanium White

Pigment Type

inorganic

Chemical Name

titanium dioxide

Chemical Formula

TiO2

Properties

Titanium White is the most brilliant of the white pigments. It is considered an all purpose oil color useful in all techniques and the best all around white. Its masstone is neither warm nor cool, placing it somewhere between Lead White and Zinc White. It is less prone to cracking and yellowing than Lead White, but it still yellows easily. Titanium White dries slowly in oil form, more slowly than Lead White but more quickly than Zinc White. It is opaque in oil and acrylic forms and semi-opaque in watercolor form. This pigment has good chemical stability, and its tinting strength is superior to both Lead White and Zinc White.

Permanence

Titanium White has excellent permanence and lightfastness.

Toxicity

Titanium dioxide is highly stable and is regarded as completely non-toxic. Animal studies give no indiciation that it is absorbed biologically, even after long periods of exposure. The primary safety concern is with inhalation of fine pigment dust particles. Titanium White, if inhaled in large amounts over the course of several years, may cause a benign pneumoconiosis that is visible on x-rays. The National Institute of Occupational Safety and Health (NIOSH) considers fine titanium dioxide particles, if inhaled, to be a human carcinogen. The primary concern for artists is to avoid exposure to fine particulate dust from raw pigments.

History

Titanium is the ninth most abundant element in the Earth's crust, however mineral deposits that are economical to mine are less common. Titanium dioxide was first discovered in 1821, although it could not be mass produced until 1919. Widespread use of the pigment began in the 1940s. Since that time, it has become the most commonly used white pigment. The name comes from the Latin word Titan, the name for the elder brother of Kronos and ancestor of the Titans, and from the Greek word tito, meaning day or sun.